EPR and FT-IR spectroscopic studies of B2O3Bi2O3MnO glasses

Vibrational spectra and structure of bismuth based quaternary glasses

“…This is confirmed from the fact that in the present glasses, the band observed at 696-720 cm −1 in infrared spectra is assigned to B-O-B bending vibrations in [BO 3 ] triangles [24] while the strong bands in the range 1258 cm −1 and 1319 cm −1 arises from B-O − stretching vibrations of orthoborate and pyroborate in BO 3 units [25]. The IR band in around 855 cm −1 represents the convolution of the absorbance bands reported for different bismuthate glasses at 840 cm −1 and 860 cm −1 , assigned to the total symmetric stretching vibrations of the [BiO 3 ] and [BiO 6 ] polyhedra, respectively [26,27].…”

Structural Elucidation of Borate Glasses by Spectroscopic and SEM Studies

“…Further, Batal [13] have studied the IR spectra, thermal properties and density values of Bi2O3, SiO2 glasses and observed the sharing of Bi 3+ in network glass structure as octahedral BiO6 groups and the possibility of presence of BiO3 units. The peak at 519 cm -1 BSB-1 glass shifted to a higher wave number side as the B2O3 content increases and reaches at 542 cm -1 , and this peak is attributed to the various modes of Bi-O and Bi-O-Bi stretching vibrations of [BiO6] octahedral structural units [14]. The bond oxygen network between two trigonal boron atoms in BO3 triangles appears in FTIR spectra at 696-685 cm -1 for BSB-1 to BSB-6 glasses [15].…”

Glass formation and optical band gap studies on Bi2O3-B2O3-BaO ternary system

“…In the FTIR spectra of these samples bands centered at around 491, 720, 870, 1210 cm -1 are observed. The infrared bands at 491 cm -1 were due to the Bi-O bending vibrations in BiO 6 units [14][15][16] . The infrared spectral range at 720 cm -1 was attributed to a bond-bending vibration of B-O-B groups [14][15][16][17] .…”

“…The infrared bands at 491 cm -1 were due to the Bi-O bending vibrations in BiO 6 units [14][15][16] . The infrared spectral range at 720 cm -1 was attributed to a bond-bending vibration of B-O-B groups [14][15][16][17] . The weak infrared bands that appear at 870 cm -1 were ascribed to the symmetrical stretching vibrations in the BiO 3 pyramidal units [15,16] .…”

“…The infrared spectral range at 720 cm -1 was attributed to a bond-bending vibration of B-O-B groups [14][15][16][17] . The weak infrared bands that appear at 870 cm -1 were ascribed to the symmetrical stretching vibrations in the BiO 3 pyramidal units [15,16] . The strong bands at 1200 cm -1…”